I found myself on an incredible planet. There are no lights, cars, or airplanes here, but people can go to heaven and earth on their own. There are no mechas or fighter jets, but people here can split mountains with one hand and break iron with one finger. There is no optical brain, no star network, no..., But intelligent creatures have survived.
This is an incredible world, said to be the ancient earth, famous for its martial arts.
——The embarrassing life of an alien girl who arrived on ancient Earth